[PWGLF] Update of occupancy bins (#9094)

Co-authored-by: sarjeeta gami <sarjeetagami@sarjeetas-MacBook-Air.local>

Author: sarjeetagami

PWGLF/Tasks/Resonances/phianalysisrun3_PbPb.cxx

@@ -78,7 +78,8 @@ struct phianalysisrun3_PbPb {
   Configurable<float> nsigmaCutCombined{"nsigmaCutCombined", 3.0, "Value of the TOF Nsigma cut"};
   Configurable<int> cfgNoMixedEvents{"cfgNoMixedEvents", 5, "Number of mixed events per event"};
   Configurable<bool> fillOccupancy{"fillOccupancy", true, "fill Occupancy"};
-  Configurable<int> cfgOccupancyCut{"cfgOccupancyCut", 2500, "Occupancy cut"};
+  Configurable<int> cfgOccupancyCut1{"cfgOccupancyCut1", 500, "Occupancy cut"};
+  Configurable<int> cfgOccupancyCut2{"cfgOccupancyCut2", 1500, "Occupancy cut"};
   Configurable<bool> isNoTOF{"isNoTOF", false, "isNoTOF"};
   Configurable<bool> additionalEvSel2{"additionalEvSel2", true, "Additional evsel2"};
   Configurable<bool> additionalEvSel3{"additionalEvSel3", true, "Additional evsel3"};
@@ -98,12 +99,10 @@ struct phianalysisrun3_PbPb {
   Configurable<bool> avoidsplitrackMC{"avoidsplitrackMC", false, "avoid split track in MC"};
   void init(o2::framework::InitContext&)
   {
-    std::vector<double> occupancyBinning = {0.0, 500.0, 1000.0, 1500.0, 2000.0, 3000.0, 4000.0, 5000.0, 50000.0};
-    AxisSpec occupancyAxis = {occupancyBinning, "Occupancy"};
 
     histos.add("hCentrality", "Centrality distribution", kTH1F, {{200, 0.0, 200.0}});
     histos.add("hVtxZ", "Vertex distribution in Z;Z (cm)", kTH1F, {{400, -20.0, 20.0}});
-    histos.add("hOccupancy", "Occupancy distribution", kTH1F, {occupancyAxis});
+    histos.add("hOccupancy", "Occupancy distribution", kTH1F, {{500, 0, 50000}});
     if (!isMC) {
       histos.add("h3PhiInvMassUnlikeSign", "Invariant mass of Phi meson Unlike Sign", kTH3F, {{200, 0.0, 200.0}, {200, 0.0f, 20.0f}, {200, 0.9, 1.1}});
       histos.add("h3PhiInvMassMixed", "Invariant mass of Phi meson Mixed", kTH3F, {{200, 0.0, 200.0}, {200, 0.0f, 20.0f}, {200, 0.9, 1.1}});
@@ -120,6 +119,7 @@ struct phianalysisrun3_PbPb {
       histos.add("h1Phimassgen", "Phi meson gen", kTH1F, {{200, 0.9, 1.1}});
       histos.add("h1Phimassrec", "Phi meson Rec", kTH1F, {{200, 0.9, 1.1}});
       histos.add("h1Phipt", "Phi meson Rec", kTH1F, {{200, 0.0f, 20.0f}});
+      histos.add("hOccupancy1", "Occupancy distribution", kTH1F, {{500, 0, 50000}});
     }
 
     // DCA QA
@@ -262,8 +262,7 @@ struct phianalysisrun3_PbPb {
       return;
     }
     int occupancy = collision.trackOccupancyInTimeRange();
-    if (fillOccupancy && occupancy > cfgOccupancyCut) // occupancy info is available for this collision (*)
-    {
+    if (fillOccupancy && !(occupancy > cfgOccupancyCut1 && occupancy < cfgOccupancyCut2)) {
       return;
     }
     float multiplicity{-1};
@@ -344,8 +343,10 @@ struct phianalysisrun3_PbPb {
       }
       int occupancy1 = c1.trackOccupancyInTimeRange();
       int occupancy2 = c2.trackOccupancyInTimeRange();
-      if (fillOccupancy && occupancy1 > cfgOccupancyCut && occupancy2 > cfgOccupancyCut) // occupancy info is available for this collision (*)
-      {
+      if (fillOccupancy && !(occupancy1 > cfgOccupancyCut1 && occupancy1 < cfgOccupancyCut2)) {
+        return;
+      }
+      if (fillOccupancy && !(occupancy2 > cfgOccupancyCut1 && occupancy2 < cfgOccupancyCut2)) {
         return;
       }
       float multiplicity;
@@ -400,8 +401,7 @@ struct phianalysisrun3_PbPb {
         continue;
       }
       int occupancy = RecCollision.trackOccupancyInTimeRange();
-      if (fillOccupancy && occupancy > cfgOccupancyCut) // occupancy info is available for this collision (*)
-      {
+      if (fillOccupancy && !(occupancy > cfgOccupancyCut1 && occupancy < cfgOccupancyCut2)) {
         return;
       }
       if (TMath::Abs(RecCollision.posZ()) > cfgCutVertex) {
@@ -582,10 +582,10 @@ struct phianalysisrun3_PbPb {
         continue;
       }
       int occupancy = collision.trackOccupancyInTimeRange();
-      if (fillOccupancy && occupancy > cfgOccupancyCut) // occupancy info is available for this collision (*)
-      {
-        continue;
+      if (fillOccupancy && !(occupancy > cfgOccupancyCut1 && occupancy < cfgOccupancyCut2)) {
+        return;
       }
+      histos.fill(HIST("hOccupancy1"), occupancy);
       multiplicity = collision.centFT0C();
       histos.fill(HIST("Centgen"), multiplicity);
       SelectedEvents[nevts++] = collision.mcCollision_as<aod::McCollisions>().globalIndex();
@@ -636,8 +636,7 @@ struct phianalysisrun3_PbPb {
       return;
     }
     int occupancy = collision.trackOccupancyInTimeRange();
-    if (fillOccupancy && occupancy > cfgOccupancyCut) // occupancy info is available for this collision (*)
-    {
+    if (fillOccupancy && !(occupancy > cfgOccupancyCut1 && occupancy < cfgOccupancyCut2)) {
       return;
     }
     auto multiplicity = collision.centFT0C();